On 22/12/14 00:03, Robert Blayzor wrote:
> I have the following transport I'm using to try to work with message 
> compression on Maildir store.
> 
> All seems to work ok, things get compressed, but Maildir file gets the size 
> (S=) POST filter.
> 
> While it's compressed on disk, the uncompressed version is used on the mail 
> client/MUA side.
> 
> 
>   maildir_tag = ,S=$message_size,W=${eval:$message_size + $message_linecount 
> + 1}
>   transport_filter = /usr/bin/xz
> 
> 
> 
> Is there a way to get the $message_size BEFORE the transport_filter?

Copy it to a per-message variable in your data ACL

>  Transport filter seems to modify the size to the actual new size

Yes, the documentation even points this out specifically.
-- 
Cheers,
  Jeremy



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